Wpf update datagrid itemssource changed

Connect and share knowledge within a single location that is structured and easy to search. The SainaAccessEntity property of your custom DataGrid is bound to the SainaAccessEntity property of the view model but you never set this property when the selection in the ComboBox changes. With these changes the ItemsSource of the DataGrid should be changed as expected when you select an item in the ComboBox. For that you can try below code or you can change type from 'SainaAccessEntity' to string.

Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Ask Question. Asked 5 years ago. Active 5 years ago. This propery by default is listening for the notfiypropertychanged event. A much easier wa is to use the inotifypropertychanged interface to "notify" your viewmodel that the observable colelction has changed.

To do this go here -. Ideally this code would be a level up say in a base class that all your view models inherit from but for now this is fine. Now when you change your collection BomHeaders the NotifyPropertyChanged will execute setter in BomHeaders and the xaml will be told that something has changed in the collection and it will update accordingly.

The inotifypropertychanged works if I add items to the collection, and refreshes the UI. However I am not looping and adding to the collection. I create a new collection from a list the first time I open and establish binding. Subsequent recreation, or setting the collection to null and recreating the collection I then don't get the UI updating. Looping and adding to the collection is a lot slower than just recreating the collection, but it's like I have to force a rebind, and am wondering if there is a better way to refresh the UI.

NotifyPropertyChanged "BomHeaders" ;. That should sort your problem out? I think if you are calling NotfiyPropertyChanged "BomHeaders" after creating a new one then you shouldn't need to do the bindingOperation this bit -. GetBindingExpressionBase this. UpdateTarget ;. I created a small test project and you have to use NotifyPropertyChanged to inform the xaml Datagrid etc that the ObservavbleCollection has been changed. The observableCollection will automatically do this for items it contains when they change etc but not for itself.

This only. I'm not sure whats going on because I've got a almost similar setup to yours and my datagrid changes. Is it possible for you to put more of your source code up so I can get a better idea of whats going in your application? Add new Model. It's a little unconvenient to drag the horizaonal scroll bar. You have implemented the INotifyPropertyChanged properties etc but your view model does not inherit from the interface.

This works even if I do not create an event handler in my UI code behind page. Is this something to do with the way WPF works? Draw chart with System. Skip to main content. Find threads, tags, and users This question was closed Mar 22, at AM by MarcJeeves for the following reason: The question is answered, right answer was accepted. Result; NewContinentModels. Add TaskContinentModel. Result ; this. Comment Show 0. Current Visibility: Visible to all users.